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C. A. WRIGHT. PUMP. No 597,076. Patented Jan. 11, 1898.

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CHARLES A. IVRIGHT, OF RIVERTON, NEV JERSEY.

PUMP.

SPECIFICATION forming part Of Letters Patent N0. 597,076, dated January 1 l, 1898.

Application filed January 15, 1897. $eria1No. 619,278, (No model.)

To all whom it may concern.-

Be it known that I, CHARLES A. WRIGHT, of Riverton, Burlington county, New Jersey, have invented an Improvement in Pumps, of which the following is a specification.

My invention has reference to pumps; and it consists of certain improvements which are fully set forth in the following specification, and shown in the accompanying drawings, which form a part thereof.

My invention comprehends certain details of construction with special reference to the production of a compact, durable, and inexpensive pump especially adapted for compression of air.

In certain classes of launches a compact air-pump adapt-ed to be driven directly from the propeller-shaft is most desirable, and it is with this object in view that I have made the present invention, which, while peculiarly well adapted for the specific purpose of compressing air for operating a whistle, may be employed for various other duties.

In carrying out my invention I provide a head having the inlet and outlet valves with a cylinder preferably formed of a piece of drawn brass tubing secured to the said head, and with the same I combine journal-heads which are clamped to the cylinder by means of bolts and each provided with a bearing for an eccentric arranged between them and close to the cylinder and connected with a reciprocatin g piston by means of an eccentric-strap. The entire construction is one which is cheap to make, durable, and adapted to take up but very little room. It is, furthermore, readily applied to any rotating shaft, the latter acting as a support for the pump as well as a means of operating it.

My invention will be better understood by reference to the accompanying drawings, in which- Figure 1 is a side elevation of a pump embodying my invention, and Fig. 2 is a sectional elevation of same on line as as.

A A are the two lower heads and are each provided with a bearing J, in which an eccentric I is journaled by lateral journals 1. These journals 1 are provided with a hole through which the power-shaft II passes and which is secured therein by means of a clamping-screw t, inserted through a notched portion in the face of the eccentric, as shown. Each of the heads A is formed with a curved groove 0, into which is fitted the lower edge of the cylinder B, which thereby properly spaces the said heads to form a clearancespace J between them, in which the eccentric rotates.

D is theupper or outer head of the pump, and has secured to it by a soldered joint Z) a cylinder B, preferably of drawn brass tubing, thereby obviating the necessity of especially turning or boring out the cylinder. The head D is formed with an annular groove or shoulder (1, which centers the cylinder and prevents lateral displacement. This outer head D is clamped to the lower heads A by bolts E E, extending through holes in said upper head and screwed into the inner or lower heads A A. These inner heads A A are preferably formed each with a curved groove 0 for properly adjusting them upon the cylinder B and relatively thereto, so as to bring the bearings J into proper relative position and also for the better assemblage of the parts. The outer head D is provided with a chamber (Z, having two transverse apertures, into one of which is secured the inlet check-valve L, and in the other of which is secured the outlet check-valve M. It will be seen from this construction that ordinary check-valves may be employed in connection with the pump and thus make it inexpensive in construction.

F is the piston and may be made of any suitable construction and preferably with a packing f of leather. The piston is of sufficient depth to avoid binding and the eccentric-rod G is journaled at one end in the piston at g and is extended into the eccentric-strap K at the other end, the said eccentric-strap encircling the eccentric and adapted to be operated thereby. The heads A A have their bearings J J located upon each side of the eccentric, as above set forth, so as to form a slot or passage-wayJ, through which the eccentric and eccentric-strap may move, and, furthermore, to condense the length of the pump to a minimum the cylinder B may be slotted on opposite sides, as at B, to prevent the striking of the eccentric-strap.

In practice the pump is supported directly upon the powershaft at one end and the nec essary pipes leading to the check-valves support the pump at the other end, thus simplifying the construction as fair as possible and yet securing a durable and positive connection with the power-shaft and obviating the necessity of building up a foundation to support the pump.

While I prefer the construction shown, the minor details thereof may be modified without departing from the principles of my invention.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination in a pump of a cylinder and outer head provided with inlet and outlet valves, with two inner or lower segmental heads having each a journal-bearing, screws for uniting the heads and cylinders together extending from the inner to the outer heads, an eccentricjournaled in the .journaLbea-rin gs between the two lower or inner heads and provided with a hole for attachment to a power-shaft, a piston within the cylinder, and an eccentric-strap for the eccentric having an extension jointed to the piston.

2. In a pump, the combination of a cylinder secured to two inner or lower heads provided each with a journal-bearing, an eccentric located between and held against lateral displacement by the heads and journaled in the journal-bearings and also having a hole for receiving the power-shaft, a piston within the cylinder, and an eccentric-strap for the eccentric provided with an extension jointed to a piston.

3. In a pump, the combination of a cylinder and outer head having valves permanently secured to the cylinder by an air-tight joint, two inner or lower heads provided each with a journal-bearing, screws or bolts extending between the single outer and two inner heads for drawing the two inner or lower heads tightly upon the cylinder, an eccentric intermediate of and journaled in the journal-bearings of the inner heads, a piston within the cylinder, and a connecting'ecceutricstrap between the piston and eccentric.

4:. In a pump, the combination of the powershaft,with an eccentric secured to said powershaft and rotating therewith and having laterally-extending bearings concentric with the power-shaft, a pump-cylinder journaled upon said lateral1y-extending bearings of the eccentric and supported thereby, a piston within the cylinder, and an; eccentric-strap for connecting the eccentric with the piston.

5. In apump, the combination of a cylinder provided with inlet and outlet valves, two inner segmental heads A A to which the cylinder is secured each provided with a journalbearing J, an eccentric I provided with journals I fitted to the journal-bearings J J and f urnished with a hole for receiving the powersha-ft, a piston within the cylinder, and an eccentric-strap K having an extension jointed to the piston.

6. In a pump, the combination of the cylin- I bearings, a piston in the cylinder, and an cecentric-strap K connecting the eccentric with the piston. I I I I I I I I I I I I In testimony of which invention I hereunto set my hand.

CHARLES A. \VRIGHT. Witnesses:

ERNEST HOWARD HUNTER, WM. L. EVANS. 

